Structural optimization of radial containment ultrasonic suspension bearing

Dong-ming LI; Wan-lei WANG; Ying JIA; Shuai LÜ

doi:10.37188/OPE.20212910.2375

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Structural optimization of radial containment ultrasonic suspension bearing

Micro/Nano Technology and Fine Mechanics | 更新时间：2021-11-01

- Structural optimization of radial containment ultrasonic suspension bearing
- Optics and Precision Engineering Vol. 29, Issue 10, Pages: 2375-2385(2021)
- 作者机构：
  
  1.大连民族大学机电工程学院，辽宁大连 116650
  2.大连交通大学机械工程学院，辽宁大连 116028
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20212910.2375
  CLC： TN384
- Received：23 June 2021，
  
  Revised：10 August 2021，
  
  Published：15 October 2021
- 稿件说明：
移动端阅览
李东明,王万雷,贾颖等.径向包容式超声悬浮轴承结构优化[J].光学精密工程,2021,29(10):2375-2385.

LI Dong-ming,WANG Wan-lei,JIA Ying,et al.Structural optimization of radial containment ultrasonic suspension bearing[J].Optics and Precision Engineering,2021,29(10):2375-2385.
李东明,王万雷,贾颖等.径向包容式超声悬浮轴承结构优化[J].光学精密工程,2021,29(10):2375-2385. DOI： 10.37188/OPE.20212910.2375.

LI Dong-ming,WANG Wan-lei,JIA Ying,et al.Structural optimization of radial containment ultrasonic suspension bearing[J].Optics and Precision Engineering,2021,29(10):2375-2385. DOI： 10.37188/OPE.20212910.2375.

摘要

为了提高超声悬浮轴承性能，提出了一种径向包容式超声悬浮轴承结构优化设计方法。基于扁壳理论和弹性力学建立了轴承壳体结构固有频率和径向挠度的数学模型，以壳体结构的长、半径、壁厚3个参数为设计变量，以壳体结构的固有频率和径向挠度作为优化目标函数，采用多目标遗传算法进行求解，从求解得到的Pareto解集中选择一组最符合设计要求的解，即长40 mm，半径10 mm，壁厚2 mm作为优化结果。为了验证本文优化方法的有效性，制作了3组轴承进行对比实验。实验结果表明：优化得到的轴承结构兼顾了超声悬浮轴承对固有频率和径向挠度的性能要求，可以产生较大的径向悬浮力，本文的研究方法和结果对设计和制造新型超声悬浮轴承具有重要的指导意义。

Abstract

To improve ultrasonic suspension bearing performance， a design method for structural optimization of radial inclusive ultrasonic suspension bearings is proposed. A mathematical model of natural frequency and radial deflection of bearing shell structure was established based on flat shell and elasticity theory. The three parameters shell structure， length， and radius and wall thickness， were taken as the design variables， and the natural frequency and radial deflection of shell structure were taken as the functional optimization objective. A multi-objective genetic algorithm was used to solve this problem. From the Pareto solution set obtained， a set of solutions most in line with design requirements （40 mm in length， 10 mm in radius， and 2 mm in wall thickness） were selected as the optimization results. To verify the efficacy of the optimization method in this paper， three groups of bearings were made for comparison testing. Experimental results show that the optimized bearing structure takes ultrasonic suspension bearing natural frequency and radial deflection performance requirements into account， and can produce a large radial suspension force. This research method and the results of this study can provide important and significance guidance for the design and manufacture of new ultrasonic suspension bearings.

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references

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